Feature test: Improve the GPS accuracy by analysis of GNSS raw data and RTCM correction data with the help of the open-source library RtkLib. Under favorable conditions you can achieve sub-meter accuracy on your smartphone!
With this app you can only test if all required features to compute the precise GPS position are available on your phone.
• at least Android version 7.0 (Nougat)
• GNSS raw data support of the GPS chip vendor
• receive RTCM correction data via NTRIP
Read more about the professional app-version here: